Type-writing machine.



No. 63I,833. .Patented Aug. 29, I899.

G. H. TREADGULD.

TYPE WRITING MACHINE.

(Application led Dec, 15, 1898.) (N0 Model.) 2 Sheets-Sheet l,

un. Bahasa. Patented Aug. 29,1899.

- G. H. TREADGOLD.

TYPE'wmTlNG MAcHlNE.

' (Application led Dec. 15, 1898..) (No Model.) 2 Sheets-Sheet 2.

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UNITED STATES PATENT OFFICE.

GEORGE I'I. TREADGOLD, OF FORT I-IURON, `MICHIGAN, ASSIGNOR OF ONE= TI-IIRD TO PETER HANES, OF GLOVERSVILLE, NEV YORK.

TYPE-'WRITING MACHINE.

SPEIFICATIO forming part of Letters Patent No. 631,833, dated August 29, 18599'.

Application filed December 15,1898. Serial. No. 699,397. (No model.)

To all whom, t may concern:

Beit known that I, GEORGE H TEEADGOLD, a citizen of the United States, residing at Port Huron, in the county of St. Clair and State of Michigan, have invented certain new and useful Improvements in Type-Vritin g Machines, of which the followingis a speciiicatiomreference being had therein to the accompanying drawings.

My invention relates to that class of typewriting machines in which a rotary typewheel is employed which is rotated differentially by the keys of the machine to bring the proper type into alinement with the paper roll and is then moved laterally to strike said type against the paper.

The invention consists in the peculiar construction, arrangement, and combination of parts, all as more fully described and claimed.

In the drawings, Figure l is a vertical longitudinal section through my type-writing machine. Fig. 2 is a cross-section on line oc x, Fig. l, looking toward the right. Fig. 3 is a sectional elevation of the under side ofthe type-wheel and its actuating mechanism. Fig. 4 is a section on line y y, Fig. 3. is a horizontal section of the paper-carriage substantially on line .e z, Fig. l. sectional perspective view of a portion of the feed-bar of said carriage. Fig. 7 is a section on line w w, Fig. 5. Fig. 8 is a section on line c fu, Fig. 5. Fig. 9 is a section on line u u, Fig. S, and Fig. lO is an elevation showing the segmental rack-bar forming part of the rotating mechanism for the type-wheel.

A is the type-wheel,` which is provided on its periphery with a series of circumferential rows `of i type, the drawings showing three of said rows a a' a2. This wheel is mounted upon a shaft B, which is journaled in a bearing in a rock-frame C. This rock-frame is bifurcated at its lower end and is pivoted to a transverse shaft D, secured to the frame of the machine. Between the bifurcations of the frame C are arranged oppositely-beveled gear-wheels E and E', adapted to mesh with a beveled pinion F, secured to the shaft B., The gearwheels E and E' are secured, respectively, to the sleeves or tubular shafts G and Gr' upon the shaft D. At the outer ends of these sleeves are arranged pinions I-I and I-I.

. of fingers c, preferably projecting from the Fig. 5Y

Fig. Gis'av or shoulder b, extending beneath one of the universal bars K and K'. These fingers b are arranged to be at different distances from the bars K and K', so that in the actuation of the 1 keys there will be a different degree of lost v motion in each from all the others.

L and L' are segmental racks adapted to l mesh with the pinious H and I-I', respectively,

and preferably pivotally secured upon the shaft J and resting normally upon theuniversal bars K and K', respectively.

M is a universal bar extending completely across the keys of the machine and in the path under sides of the keys. These fingers, like the fingers b, are dierentially arranged, so as to give a greater or less degree of lost motion of the keys before the fingers strike against the bar M.

The rock-frame O is provided with a segmental arm N, extending around concentric with the shaft B and provided at one point with a notch N'.

O is a rod connected to the rock-arm M', to 85 which the bar M is secured and extending upward therefrom. This rod is preferably. provided with a longitudinal slot O', through which the shaft D passes, and at the upper end of the rod is arranged a lug or detent 9o O2, adapted to engage with the notch N' in the segmental arm N.

P is a wedge-block secured to a spring-arm P', extending from the end of the arm N and adapted to be pressed by said springinto engagement with the opposite gear-wheels E and E', so as to lock the same from rotation. This wedge-block is, however, normally held out of engagement with said gears by a lug O3 on the rod O when the latter is in a position to hold the detent O2 in engagement with`the notch N'.

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The type-Wheel A is so secured to the shaft B as to be free to slidelongitudinally thereon.

Q is a sleeve longitudinally slidingly secured upon the bearing of the frame C, in which the shaft B is journaled and held from` rotation thereon by afeather or in any other suitable way. This sleeve has a hooked engagement with the wheel A, preferably by forming thereon the annular grooved iiange d, engaging with the annular iiange e upon the wheel A.

R is a cam pivotally secured at R to the frame C and engaging' with the lug or antifriction-roll R2 upon the sleeve Q, preferably by being provided with the inclined slot R3, into which said roll projects. On the opposite side of the pivot this cam is provided with an actuating-arm R4, which extends into proximityto the shaft D.

S is a sleeve longitudinally sliding upon the sleeve G on the shaft D and provided with lugs or rolls S on opposite sides of the arm R4.

T is a cam engaging with an annular groove S2 upon the sleeve S and adapted to move the same longitudinally upon the shaft without interfering with its rotary movement thereon. This cam T is adapted to be actuated by the case-keys T and T2, one of which moves itin one direction and the other in the opposite direction.

U is an inking-roll connected tothe free end of an arm or frameU, which is adapted to hold it in the path of the type-Wheel A.

The paper-carriage of my machine comprises the usual paper-roll V, which is mounted upon a reciprocating frame V'. This frame is provided with a bar V2, which engages With a groove V3 in the base lV of the machine and is preferably supported upon antifriction-rolls V4. The upper side of the bar V2 is provided with a series ofl transverse grooves ff', the former being at right angles to the bar and the otherinolined so as to form a continuous zigzag slot from one end of the bar to the other. The bottoms of the slots f are inclined upward from front to rear, so as to form steps or drops g at the point where they merge in the slots j".

X is a bar extending at right angles to the bar V2 and slidingly secured in bearings upon the base of the machine. This bar is provided at its rear end with a downward-projecting lug or antifrict-ion-roll h, adapted to engage with the grooves ff in the bar V2. At its outer end the bar X engages with the arm Y, connected to a universal bar Y', extending under all of the keys of the machine, this arm being so arranged thatv when any one of the keys is depressed it will impart a forward movement to the bar X, which will cause the roil h to travel from the front end of the groove f to the rear thereof.

X' is a spring for returning the bar X to its initial position.

The partsbeing constructed as thus far shown and described, the operation of the m achine is as follows: Whenever one of the keys I is depressed-as, for example, one of the keys on the left-hand side of the machine-it Will cause the nger to strike against the universal bar K, causing the latter to lift the segmental rack L and impart arotary motion to the pinion H on the'sleeve G. This will cause the bevel-gear E to rotate thepinion F on the shaft B and turn the type-wheel A a certain distance, the amount of rotation depending upon the degree of lost motion before the finger b strikes the arm K. At the same time the movement of the key I will cause the lfinger o to travel into contact with the universal bar M and cause the latter to rock the arm M and lift the bar O, which will first disengage the lug O2 from the notch N and then by the withdrawal of the lug Os permit the wedge P to lock the gear-wheels E and E'. This locking of the gear-wheels'will of course prevent further rotation of the type-wheel A but inasmuch as both gears E and E' are free to rotate upon the shaft D the further move ment of the key I will cause a rocking of the frame C, carrying the type-Weeel A downward and causing the proper type to strike 'against the paper on the roll V. Upon releasing the pressure on the key I the reverse movement will be imparted to the various parts, the frame C and type-Wheel being iirst lifted by a spring C' until the detent O2again engages with the notch N and the lug O2 then disengagng the Wed ge P from the gear-Wheels E and E', allowing the former to be rotated until the type-wheel A is again brought into its normal position. The rock-arm M' and bar O are returned to their normal positions l either by gravity or by a spring. (Not shown.)

Thus, in brief, the operation of each key will first impart a rotary movement to the typewheel, then unlock the frame carrying said wheel and lock the wheel from further rota tion, and finally will cause the throwing down of said wheel into contact with the paper.

Inasmuch as it is customary in the construction of type-writing machines to have each key represent a number of different characters, itis necessary to provide means for moving the wheel A longitudinally upon the shaftv iB to bring in one of the rolls a, a', and`a2 into y T will impart a longitudinal movement to the sleeve S, which will cause the lug or rolls S/ to rock arm R4 of the cam R, causing the latter to move the sleeve Q longitudinally on the frame C. and 'impart a correspondinglongitudinal movement to the type-wheel A. This will bring one or the other of the rows n.' a2 into proper alinement with the paperroll. Each actuation of the keyI will also'im- IOO IIO

part motion to the universal bar Y and the arm Y, carried thereby, which will cause the rearward movement of the bar carrying the roll h to the rear end of the slot f, with which it engages, and allow it to drop down the step g into the slot f. As 7the key I is released the spring X' will again retract the rod X; but inasmuch as the roll h has dropped down the step or shoulder g it is compelled in its return movement to travel the slot f, and this will cause the bar V2 to be moved longitudinally. Each successive actuation of a key will thus cause the bar V2 to move from one of the grooves f to the next adjacent one, which will carry the paper-roll the proper distance for another letter.

When the carriage has traveled completely across the machine or whatever distance is desired by the operator, it may be returned by the mechanism illustrated in Figs. 5, 8, and 9 of the drawings, in which 't' is a lever pivoted upon the bearing j, in which the bars X and V2 are slidably secured. k is a pin connected to the end of the lever t and extending down in a slot in the bearing] in the path of a shoulder Z on the bar X, being so arranged that it will normally hold said bar from being retracted by the spring X far enough to disengage the roll 71J from the slot f of the bar V2. When, however, the pin 7c is lifted by the actuation of the lever i', the bar X is free to be drawn so as to disengage the roll 7L from the slot f, and the carriage may then be moved backward to the proper position.

The inking-roll U is so arranged in relation to the wheel A that each time the wheel is thrown down the roll will be drawn across the face of the type to ink the letter and will be pressed out of the way before the wheel comes in contact with the paper. This mechanism, however, forms no part of my present invention.

What I claim as my invention isl. In a type-writing machine, the combination with a type-wheel and key-actuated means for rotating said wheel and for moving it laterally against the printing-surface, of means forv normally locking said roll from said lateral movement, and means for simultaneously arresting the rotation of said wheel and for unlocking said locking means.

2. In a type-writing machine, the combination with the rotating type-wheel of an actuating-shaft therefor on which said wheel is longitudinally sliding'l y secured, a rock-frame in which said shaft is journaled, a non-rota tive sleeve slidingly secured upon said rockframe and having a swivel connection with said wheel, a cam for reciprocating said sleeve having an actuating-arm extending in toward the axis of said rockframe and means for moving said arm to shift said wheel in different positions on said shaft.

3. In a type-writing machine, a feed for the paper-carriage comprising a bar on the carriage frame having a zigzag slot formed therein, a bar extending transversely of said frame-bar in the plane of one section of said zigzag slot, and having a lug or roll engaging with said slot, means for moving said latter bar by the depression of any one of the keys of the machine to cause said lug or roll to travel across said parallel slot-section into the angling section thereof and means for retracting said bar on the release of said key and thereby causing said roll to travel the inclined section of said slot and feed said frame-bar forward.

4. In a type-writing machine, a feed for the carriage comprising the bar V2 on the carriageframe having a zigzag slot formed therein consisting of the perpendicular cross-slot sections f and angling slot-sections f With the step or drop g at the point of junction, the bar X eX- tending parallel to the planes of the slots f and having the lug or roll h engaging said slot, means for actuating said latter bar by the depression of any one of the keys to cause said lug or roll to travel across said slot-section f and drop into the section f', and a spring for returning said bar for the purpose described.

5. The combination of the bar V3 having perpendicular'and inclined cross-slots f and f forming a continuous zigzag channel along the bar of a key-actuated bar adapted to be reciprocated across said bar V3 and having a lug or roll engaging with said zigzag channel, a pin for limiting the movement of said reciprocating bar to prevent the disengagement of said lug or roll from said slot and a lever for retracting said pin to permit of the disengagement of said roll and the free movement of said bar V3.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE II. TREADGOLD.

Vitnesses:

Gno. S. CLARKE, HERMAN J. IIILL.

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